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Yes, had that on a hilly 8miler with pace sections only yesterday. Tends to happen more often when it's warmer weather though.
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I've had that doing vo2 max on the bike at 95% hr max my hands and face go numb. I did read into it and apparently its not uncommon and just blood leaving the extremities where its needed less. For me the feeling comes back very quickly as soon as i back off less than a minute. I actually find it good to do a couple of these sessions before a short race so when it happens I'm like oh my face is going numb again rather than thinking oh shit i can't feel my hands what is happening.
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Yes, I think it's due to low carbon dioxide in the blood as you're puffing away blowing out more than you need to (not a doctor/expert but reading about low CO2 sounds familiar).
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Stonehedge
Retro_Bastard
Arducius
@deleted
Anyone else’s hands tingle when you are getting close to your limit? Trying to run up a long hill or similar, it’s really off putting.